Question

ajutor am nevoie de el in 20 de minute,dau coroana si ori ce.
exercitiul 19 va rog

Answer 1

Răspuns:

a)

$( - 4) \times ( - 213) \times ( + 25) = \\ = + (4 \times 213 \times 25) = \\ = + (100 \times 213) = \\ = + 21 \: 300$

b)

$15 \times ( - 117) \times ( - 2) = \\ = + (15 \times 117 \times 2) = \\ = + (30 \times 117) = \\ = + 3510$

c)

$( - 2) \times 37 \times ( + 4) \times ( - 125) = \\ = + (2 \times 37 \times 4 \times 125) = \\ = + (74 \times 500) = \\ = +37 \: 000$

d)

$+ 50 \times ( - 17) \times ( - 200) \times ( - 3) = \\ = - (50 \times 17 \times 200 \times 3) = \\ = - (10 \: 000 \times 51) = \\ = - 510 \: 000$

e)

$( - 5) \times ( - 217) \times ( - 200) \times ( - 3) = \\ = + (5 \times 217 \times 200 \times 3) = \\ = + (1000 \times 651) = \\ = + 651 \: 000$

f)

$( - 15) \times 313 \times ( - 8) \times ( - 20) = \\ = - (15 \times 313 \times8 \times 20) = \\ = - (300 \times 2504) = \\ = - 751 \: 200$

Explicație pas cu pas:

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